or you could just look at the interface and see that the AP says it's putting out too high of power...
I just checked an AP, and it is perfectly happy to run at too high of power even though antenna size is set properly and it's set to calculate eirp limit - the problem is, it is calculating the max EIRP correctly, but it's using the PtP limits, not the PtMP limits. So for example, if I have it set to a 15dbi antenna, it is perfectly happy to let me set the tx power at 27dbm, which is 42dbm EIRP (6db over the legal limit for PtMP). On ePMP, the AP will always use the PtMP limits unless it's specifically set to PtP mode (which ubnt radios can't really do, since there isn't a PtP only mode). I wonder if this might explain some of the issues people are seeing... On Sun, Jun 5, 2016 at 6:51 PM, Josh Reynolds <j...@kyneticwifi.com> wrote: > The easiest way to test this is via a reverse path calc. Design for the > target signal level you see now and compare it. > On Jun 5, 2016 6:38 PM, "Mathew Howard" <mhoward...@gmail.com> wrote: > >> Actually, no... I don't believe ubnt radios will limit it properly for >> ptmp, even all the right boxes are checked and the antenna is set >> properly... but ePMP would. >> On Jun 5, 2016 6:28 PM, "Colin Stanners" <cstann...@gmail.com> wrote: >> >> If all that is done in the Ubnt gear, yes, but I suspect a number of Ubnt >> WISPs do not... >> >> On Sun, Jun 5, 2016 at 4:50 PM, Jerry Head <li...@blountbroadband.com> >> wrote: >> >>> i guess it could be something like that...but are they not both limited >>> to regional maximum if one checks the calculate EIRP limit in the ubnt >>> gear? And sets the correct antenna gain of course... >>> >>> On 6/5/2016 3:58 PM, Colin Stanners wrote: >>> >>> Is it possible the ePMP tx power is at the regional maximum while the >>> ubiquiti tx power was at the hardware maximum? >>> >>> On Sun, Jun 5, 2016 at 3:23 PM, Jerry Head <li...@blountbroadband.com> >>> wrote: >>> >>>> RSSI? >>>> 4-7dBm >>>> >>>> >>>> On 6/5/2016 1:17 PM, Jay Weekley wrote: >>>> >>>>> What was the average signal difference? >>>>> >>>>> Jerry Head wrote: >>>>> >>>>>> It absolutely does perform worse on the same link, we just helped a >>>>>> friend move an entire site from UBNT to epmp to make use of the sync >>>>>> capabilities. We actually had to transfer about 15% of the customers to >>>>>> 900 >>>>>> because they would not work at all on epmp. >>>>>> >>>>>> On 6/2/2016 4:31 PM, Mathew Howard wrote: >>>>>> >>>>>>> But does it actually perform worse that UBNT 2.4ghz on the same >>>>>>> link, or is it maybe just differences in how they calculate signal >>>>>>> levels? >>>>>>> It doesn't make any sense that two different radios running on the same >>>>>>> frequency putting the same amount of power into the same antennas would >>>>>>> give significantly different signal levels... >>>>>>> >>>>>>> The closest thing I've done to a comparison was playing with a Force >>>>>>> 200 2.4ghz in wifi mode... there didn't seem to be a significant >>>>>>> difference >>>>>>> between it and a PowerBeam connecting to the same AP. >>>>>>> >>>>>>> On Thu, Jun 2, 2016 at 4:10 PM, Josh Luthman < >>>>>>> <j...@imaginenetworksllc.com>j...@imaginenetworksllc.com <mailto: >>>>>>> j...@imaginenetworksllc.com>> wrote: >>>>>>> >>>>>>> And I've tried IT Elite dual pol panels, Force 200 2.4, >>>>>>> integrated + reflector for CPEs. Continues to suck. >>>>>>> >>>>>>> >>>>>>> Josh Luthman >>>>>>> Office: 937-552-2340 <tel:937-552-2340> >>>>>>> Direct: 937-552-2343 <tel:937-552-2343> >>>>>>> >>>>>>> 1100 Wayne St >>>>>>> Suite 1337 >>>>>>> Troy, OH 45373 >>>>>>> >>>>>>> On Thu, Jun 2, 2016 at 5:08 PM, Ken Hohhof < <af...@kwisp.com> >>>>>>> af...@kwisp.com> wrote: >>>>>>> >>>>>>> I’m thinking more the CPE antennas. >>>>>>> *From:* CBB - Jay Fuller <mailto: >>>>>>> <par...@cyberbroadband.net>par...@cyberbroadband.net> >>>>>>> *Sent:* Thursday, June 02, 2016 3:59 PM >>>>>>> *To:* af@afmug.com >>>>>>> *Subject:* Re: [AFMUG] PMP450 vs. ePMP >>>>>>> >>>>>>> hmm, i will check into that. Pretty sure with ubnt we're >>>>>>> using kp performance. With epmp, i think it is bundled >>>>>>> antennas... >>>>>>> >>>>>>> ----- Original Message ----- >>>>>>> *From:* Ken Hohhof <mailto: <af...@kwisp.com> >>>>>>> af...@kwisp.com> >>>>>>> *To:* af@afmug.com <mailto:af@afmug.com> >>>>>>> *Sent:* Thursday, June 02, 2016 3:50 PM >>>>>>> *Subject:* Re: [AFMUG] PMP450 vs. ePMP >>>>>>> >>>>>>> Jay, I suspect the difference you are seeing may be >>>>>>> mainly in the antennas. 2.4 GHz from any vendor should >>>>>>> penetrate the same, the radio waves don’t care what brand >>>>>>> radio launched them. And I think the difference between >>>>>>> the platforms will be most evident in low interference >>>>>>> environment where they can achieve their full modulation >>>>>>> and throughput. With low SNR, I think it’s kind of like >>>>>>> arguing Ferrari vs Porsche for off road racing, neither >>>>>>> will be able to show off its capabilities. Receiver >>>>>>> sensitivity and bits/sec/Hz won’t matter. >>>>>>> *From:* CBB - Jay Fuller <mailto: >>>>>>> <par...@cyberbroadband.net>par...@cyberbroadband.net> >>>>>>> *Sent:* Thursday, June 02, 2016 3:28 PM >>>>>>> *To:* af@afmug.com >>>>>>> *Subject:* Re: [AFMUG] PMP450 vs. ePMP >>>>>>> >>>>>>> Also interested in interference rejection of the pmp450 >>>>>>> - is there any (in 2.4) >>>>>>> we are getting better foliage penetration with ubnt 2.4 >>>>>>> than epmp 2.4 - - and from the performance of >>>>>>> the epmp 2.4 i wish wish wish it penetrated better! >>>>>>> >>>>>>> ----- Original Message ----- >>>>>>> *From:* Matt <mailto: <matt.mailingli...@gmail.com> >>>>>>> matt.mailingli...@gmail.com> >>>>>>> *To:* af@afmug.com <mailto:af@afmug.com> >>>>>>> *Sent:* Thursday, June 02, 2016 2:25 PM >>>>>>> *Subject:* [AFMUG] PMP450 vs. ePMP >>>>>>> >>>>>>> We have mostly PMP100 and PMP450 deployed. Some >>>>>>> Ubiquiti we tried and >>>>>>> some we inherited as well. Have some ePMP we have >>>>>>> tested but so far >>>>>>> have not deployed more then couple test links. >>>>>>> >>>>>>> For those who have tried both ePMP and PMP450 what >>>>>>> are the differences >>>>>>> you have seen in performance? Interference tolerance >>>>>>> among others? >>>>>>> >>>>>>> For those that have gone with PMP450 over ePMP what >>>>>>> was the reasoning? >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >>> >>
